MESON Chess Problem Database

Problem Display
PID: 151675 (rn6/2p2P2/2k1Br1Q/pRN5/K1p3p1/6B1/8/2b5 w - - 0 1)

Harley, Brian

Chess Amateur (The), 1911

rn6/2p2P2/2k1Br1Q/pRN5/K1p3p1/6B1/8/2b5

#2

7 + 9

55 The Observer 1933
15290 Harley Scrapbook 2014
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.Qxe6#
    • 1...Rg6
      • 2.Qh1#
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sd8#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Rf4
        • 2.Bf5#
      • 1...Bf4
        • 2.Qh1#
      • 1...Sa6
        • 2.Sxa5#
      • 1...Sd7
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);OGATE,P_SPINR(f),XB(E)::QAR2(F),XR(f)
    • R(f);N_GUARD::QAB(F)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(f);OGATE,P_SPINR(f),XB(E)::QAR2(F),XR(f)
      • R(f);OGATEB::QAR(F)+B(E)
      • B(a);S_CUTR(f)::QAB(F)
      • S(i);S_CUTR(h)::S(D),XP(d)
      • S(i);SBLOCK::B(E)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).